<template>
  <div class="container">
    <div class="app-container">
      <!-- 角色管理内容 -->
      <div class="role-operate">
        <el-button size="mini" type="primary" @click="showDialog = true">添加角色</el-button>
      </div>
      <!-- 放置table组件 -->
      <el-table :data="list" border :header-cell-style="{ backgroundColor: '#f5f6f8', color: '#909399' }">
        <!-- 放置列 -->
        <el-table-column prop="id" align="center" width="50" label="序号" />
        <el-table-column prop="name" align="center" width="200" label="角色">
          <template v-slot="{ row }">
            <!-- 条件判断 -->
            <el-input v-if="row.isEdit" v-model="row.editRow.name" size="mini" />
            <span v-else>{{ row.name }}</span>
          </template>
        </el-table-column>
        <el-table-column prop="state" align="center" width="200" label="启用">
          <!-- 自定义列结构 -->
          <template v-slot="{ row }">
            <!-- 开 1   关 0 -->
            <el-switch v-if="row.isEdit" v-model="row.editRow.state" :active-value="1" :inactive-value="0" />
            <span v-else>{{ row.state === 1 ? "已启用" : row.state === 0 ? "未启用" : "无" }}</span>
          </template>
        </el-table-column>
        <el-table-column prop="description" align="center" label="描述">
          <template v-slot="{ row }">
            <el-input v-if="row.isEdit" v-model="row.editRow.description" type="textarea" size="mini" />
            <span v-else>{{ row.description }}</span>
          </template>
        </el-table-column>
        <el-table-column align="center" label="操作">
          <!-- 放置操作按钮 -->
          <template v-slot="{ row }">
            <template v-if="row.isEdit">
              <!-- 编辑状态 -->
              <el-button size="mini" type="primary" @click="btnEditOK(row)">确定</el-button>
              <el-button size="mini" @click="row.isEdit = false">取消</el-button>
            </template>
            <template v-else>
              <!-- 非编辑状态 -->
              <el-button type="text" @click="btnPermission(row.id)">分配权限</el-button>
              <el-button type="text" @click="btnEditRow(row)">编辑</el-button>
              <el-popconfirm title="这是一段内容确定删除吗？" @onConfirm="confirmDel(row.id)">
                <el-button slot="reference" style="margin-left: 10px" type="text">删除</el-button>
              </el-popconfirm>
            </template>
          </template>
        </el-table-column>
      </el-table>
      <!-- 放置分页组件 -->
      <el-row style="height:100px" type="flex" align="middle" justify="center">
        <!-- 放置分页组件 -->
        <el-pagination :page-size="pageParams.pagesize" :current-page="pageParams.page" :total="pageParams.total" layout="prev, pager, next" @current-change="changePage" />
      </el-row>
    </div>
    <!-- 放置弹层 -->
    <el-dialog width="500px" title="新增角色" :visible.sync="showDialog" @close="btnCancel">
      <!-- 表单内容 -->
      <el-form ref="roleForm" :model="roleForm" :rules="rules" label-width="120px">
        <el-form-item prop="name" label="角色名称">
          <el-input v-model="roleForm.name" style="width:300px" size="mini" />
        </el-form-item>
        <el-form-item label="启用" prop="state">
          <!-- 重置表单数据 需要prop属性 -->
          <!-- 如果不需要校验 就不需要写 prop属性 -->
          <el-switch v-model="roleForm.state" :active-value="1" :inactive-value="0" />
        </el-form-item>
        <el-form-item prop="description" label="角色描述">
          <el-input v-model="roleForm.description" type="textarea" :rows="3" style="width:300px" size="mini" />
        </el-form-item>
        <el-form-item>
          <el-row type="flex" justify="center">
            <el-col :span="12">
              <el-button size="mini" type="primary" @click="btnOK">确定</el-button>
              <el-button size="mini" @click="btnCancel">取消</el-button>
            </el-col>
          </el-row>
        </el-form-item>
      </el-form>
    </el-dialog>
    <!-- 放置分配角色弹层 -->
    <el-dialog :visible.sync="showPermissionDialog" title="分配权限">
      <!-- 放置权限数据 -->
      <el-tree ref="permTree" check-strictly :data="permissionData" :props="{ label: 'name' }" show-checkbox default-expand-all :default-checked-keys="permIds" node-key="id" />
      <el-row slot="footer" type="flex" justify="center">
        <el-col :span="6">
          <el-button type="primary" size="mini" @click="btnPermissionOK">确定</el-button>
          <el-button size="mini" @click="showPermissionDialog = false">取消</el-button>
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>

<script>
import { getRoleList, addRoleList, updateRole, delRole, getRoleDetail, assignPerm } from '@/api/role'
import { getPermissionList } from '@/api/permission'
import { transListToTreeData } from '@/utils'

export default {
  name: 'Role',
  data() {
    return {
      list: [],
      showDialog: false, // 控制弹层显示隐藏
      // 将分页信息放置到一个对象中
      pageParams: {
        page: 1, // 第几页
        pagesize: 5, // 每页多少条
        total: 0
      },
      roleForm: {
        name: '', // 角色名称
        description: '', // 角色描述
        state: 0 // 默认未启用
      },
      rules: {
        name: [
          {
            required: true,
            message: '角色名称不能为空',
            trigger: 'blur'
          }
        ],
        description: [
          {
            required: true,
            message: '角色描述不能为空',
            trigger: 'blur'
          }
        ]
      },
      showPermissionDialog: false, // 控制权限弹层
      permissionData: [], // 接收权限树数据
      currentRoleId: null, // 分配权限记录id
      permIds: []
    }
  },
  created() {
    this.getRoleList()
  },
  methods: {
    async getRoleList() {
      const { rows, total } = await getRoleList(this.pageParams)
      this.list = rows // 赋值数据
      this.pageParams.total = total
      // 针对每一行数据添加一个编辑标记
      this.list.forEach(item => {
        // item.isEdit = false // 添加一个属性 初始值为false
        // 数据响应式的问题 数据变化 视图更新
        // 添加的动态属性 不具备响应式特点
        // this.$set(目标对象, 属性名称, 初始值) 可以针对目标对象 添加属性 添加响应式
        this.$set(item, 'isEdit', false)
        this.$set(item, 'editRow', {
          name: item.name,
          state: item.state,
          description: item.description
        })
      })
    },
    // 切换分页时 请求新的数据
    changePage(newPage) {
      this.pageParams.page = newPage // 赋值当前页码
      this.getRoleList()
    },
    btnOK() {
      this.$refs.roleForm.validate(async isOK => {
        if (isOK) {
          await addRoleList(this.roleForm)
          this.$message.success('新增角色成功')
          this.getRoleList() // 重新获取数据
          this.btnCancel()
        }
      })
    },
    btnCancel() {
      this.$refs.roleForm.resetFields() // 重置表单
      this.showDialog = false // 关闭弹层
    },
    // 点击编辑行
    btnEditRow(row) {
      row.isEdit = true // 改变行的编辑状态
      // 更新缓存数据
      row.editRow.name = row.name
      row.editRow.state = row.state
      row.editRow.description = row.description
    },
    // 点击确定修改角色时触发
    async btnEditOK(row) {
      if (row.editRow.name && row.editRow.description) {
        // 调用修改接口
        await updateRole({ ...row.editRow, id: row.id })
        // 更新成功
        this.$message.success('更新角色成功')
        // 更新显示数据   退出编辑状态
        // row.name = row.editRow.name   // eslint的校验 误判
        Object.assign(row, {
          ...row.editRow,
          isEdit: false // 退出编辑状态
        }) // 规避eslint的误判
      } else {
        this.$message.warning('角色和描述不能为空')
      }
    },
    async confirmDel(id) {
      await delRole(id)
      this.$message.success('删除角色成功')
      // 删除的如果时最后一个
      if (this.list.length === 1) this.pageParams.page--
      this.getRoleList()
    },
    async btnPermission(id) {
      this.permissionData = transListToTreeData(await getPermissionList(), 0)
      this.currentRoleId = id // 记录id
      const { permIds } = await getRoleDetail(id) // 获取详情
      this.permIds = permIds // 赋值数据
      this.showPermissionDialog = true
    },
    // 分配权限 点击确定时触发
    async btnPermissionOK() {
      await assignPerm({
        id: this.currentRoleId,
        permIds: this.$refs.permTree.getCheckedKeys()
      })
      this.$message.success('角色分配权限成功')
      this.showPermissionDialog = false
    }
  }
}
</script>

<style scoped>
.container {
  padding: 20px;
  min-height: calc(100vh - 50px);
}

.app-container {
  padding: 20px;
}

.role-operate {
  padding: 0 0 10px;
}
</style>
